儿童髌骨脱位可分为急性髌骨脱位,复发性髌骨脱位,习惯性髌骨脱位,神经源性髌骨脱位及先天性髌骨脱位。急性髌骨脱位是各种原因所致的初次髌骨脱位,多是由于间接暴力所致。如果患儿髌骨本身存在一种或者多种的潜在解剖异常,包括股内侧肌发育不良,内侧软组织松弛,股骨前倾角增大,滑车 Children with patellar dislocation can be divided into acute patellar dislocation, recurrent patellar dislocation, habitual patellar dislocation, neurogenic patellar dislocation and congenital patellar dislocation. Acute patellar dislocation is caused by a variety of reasons for the first patellar dislocation, mostly due to indirect violence. If the patella in children with one or more of its potential anatomical abnormalities, including medial dysplasia, medial soft tissue relaxation, an increase in anteversion, the pulley